Found some links on the 3-D printed reproductions
https://moparconnectionmagazine.com/iprint3d-companys-dash-vent-combo-for-70-74-dodge-challengers-plymouth-barracudas/
https://board.moparts.org/ubbthreads/ubbthreads.php/ubb/showflat/Number/3326417/gonew/1/70-challenger-air-dash-vents.html#UNREAD
Scott Smith of Harms Auto used to post quite a bit over on Moparts. He was very into plastics and would post various techniques for various plastics. I recall the door panels being a plastic that was not conducive to repair.
Way back (mid 1990's), there was a magazine (Mopar Action, Mopar...
I am members of Moparts, E-Bodies.Org and here. All the same screen name. Was also a member of www.Cuda-Challenger.com before that tanked.
I find the knowledge base across all forums to be a much larger base to pull from then just one.
I have probably 15-20 years of bookmarks by category...
I’ve seen the term “NOS Take-Off” many times in ads. What does that mean?
During the ‘80’s I bought many parts at the dealer. Many shipped without a box. 🤷
The vert parts are $$$ if all there. Lots of unique parts. I’ve seen parts lots offered in the $7-10k range of the unique parts to clone a hardtop into a vert.
From top of memory
- top assembly
- stainless top trim at well
- rear seat with track for boot
- boot with clips
- rear interior...
I recall reading a thread somewhere which showed tweaking done to the moldings.
One guy used a shrinker/stretcher on the flange while another guy made pie cuts in the flange.